The U.S. Post Office-Ansonia Main, also known as the Ansonia Main Post Office, is located at 237 Main Street in Ansonia, Connecticut. It is a single story steel and masonry structure, finished in limestone, and exhibiting restrained Classical Revival detailing. It was designed by Oscar Wenderoth and completed in 1914. It is one of the more architecturally sophisticated buildings in Ansonia's central business district.The building was listed on the National Register of Historic Places in 1985.
